The NFI Ground Plot Data Dictionary describes the structure of the NFI ground plot database and documents the definition, format and reporting rules for each attribute within.
Data Dictionary for plots measured from 2000-2006
Version 5.0 (PDF, 720KB)
Data Dictionary for plots measured from 2007-present
Version 5.1.7 (PDF, 3.6MB)
Ground Plot Guidelines
Describes the recommended field sampling procedures for the establishment and ongoing measurement of NFI ground plots.
Version 5.0 (PDF, 3.65MB)